Review on WHSSFINE Trailer Hitch Receiver Lock 5/8 Pins - Class III IV, 2 inch Receiver - Pack of 2 by Jason Laney

The tongue lock does not require a key. You can put anything in the slot and it will spin. Even with a finger, with enough pressure, the lock will turn. Not very sure. The ball lock cylinder did not rotate once I placed it on the trailer. Been trying to turn back for a while. I had to hit it several times with a hammer to break it and remove it. It would be very bad if I didn't have a hammer, or I would be somewhere far away.